Oil rectifier



Jan. 12 1926. I 1,569,795

w. G. WALL OIL RECTIFIER Filed Feb. 14, 1925 gwvantoap fi M WilliamGWall Patented Jan. 12, 1926. A v "1,569,795. I UNITED STATES PATENT OFFICE WILLIAM WALL, F INDIANAPOLIS, INDIANA, ASSIGNOR TO RECTIFIER IAlNUFAG- TUBING COZMPAN' Y, 01 DIANAPOLIS, INDIANA, A CORPORATION OF INDIANA.

on. ang'rrrma- Application filed February 14, 1025. Serial No. 9,142.

" To all whom it mag/"ooncern: which are made a part hereof and on which Be it known thatI, WILLIAM G. WALL, a similar reference characters indicate simi- 'citizen of the United States, residing at lar parts, i p

Indianapolis, in the county of Marion and Figure 1 is a side elevation of an engine I State of Indiana, have invented certain new with my device connected thereto, 60 e and useful Improvements in Oil Rectifiers, Fi ure 2, a central section through the oil of which the following is a specification. recti er, and s My said invention relates to an oil recti- Figure 3, a horizontal section on line 3-3 fier for use in automobiles and it is an obof Figure 2.

ject ofthe same to provide a device of this In the drawings reference character 10 55 character which shall remove impurities indicates an engine of conventional characsuch as dirt, water, gasoline, kerosene and ter having a carbureter 11. An oil pum. particles of metal from the oil in the crank 12 is provided for circulating the oil through case of the engine. It is well-known that the partsto be lubricated, a pipe 13 leading such impurities are a source of danger to from the crank case to the pum and a pipe 70 the engine on account of possible burning 14 leading from the pum to t e cylinders out of bearings and scoring of cylinders and and other arts to be lubricated. they are also a source of excessive wear A'brancii 15 extends from the i e 14 to which is detrimental to the life of the ena chamber 16 in the lower part of tiie rectiginc. A slight amount of dilution of the fier having a ort 17 through which the oil 75 oil due'to the presence of a very smallperenters from t e branch 15, it being undercentage of the heavier fractions of kerosene stood that the pump regularly forces a ceris, however, distinctly advantageous in cold tain part ofthe oil through the branch 15 weather and is destrimental to only a very to purify it. The chamber 16 provides a slight degree in warm weather so far as settling basin for the oil with a drainage so the lubrication is concerned. outlet 18 connected to a threaded port 18' Another object of the invention is to proat the bottom for removal of the heavier vide an oilrectifier which may be connected impurities such as dirt and particles of to the carbureter, as it requires but a low me al a c mulating therein and is provided degree of vacuum or onlyarelatively'slight above the ort 1 7 with a metallic screen 19 85 amountof suction as compared with previ- 'tbove whic is a fabric screen 20, these parts 'ously known devices of t is character. It being held between a shoulder on the main is known to be objectionable to connect an shell 21 of the rectifier and the removable oil rectifier to the intake manifold as is bottom piece 22 of the chamber 16 in the n customary-since such connectionfdue to the embodiment of the invention here illusing to the oil rectifier from a point adjaa valve 25 sup orted by athermostatic strip breaking of the vacuum in the intake mani ra ed; e fold is apt to cause sensitive engines to miss A pipe 23 extends upward from the chamwhen idling and this is objectionable. Furbe 16 to the main chamber 24 of'the device thermore the suction effect on the pipe leadid plp b i g Closed at upp r n by' centthe throttle valve is greatest when the of metal 26 0 such a character that .exoesengine is runningslowest with no load and s1v e heat n the chamber 24 will bend the therefore the oil is drawn through the delp upward at Its free end to hit the vice faster at slow speeds. The heat in the v lve 2 ut of the plpe 23 so as to afford exhaust increases with increasing speed of free passagefon the oil through a s1 hon the engine while the flow of oil decreases herelnafter descljlbed. This action is 0 imand therefore there is danger of too much P 0 1 th 0 1 reaches too high temperadistillation at high speeds and too little dishire 1n the chamber 24, the temperature of "tillation at' low speeds in cases where the h 011 bemg'regulated y h e Of'ItB connection is to the intake manifold. f p g A further object of the invention is to R p m h h b ugh a relaprovide means for removing the mechanical tlvely Small p g at 27 under the action particles or foreign matter, preferably beof SUCtIOIl fl'bm i whi h fore the distillation takes place. transmits its suction effect through a pipe 55 Referring to the accompanying drawings 28' to a passage 29 at the upper end of the 9 .flow. Normally the oil passes from the m5 through the pipe 23.

the chamber 24 said chamber 24. The thermostatic strip is held in place by a screw in a manner to permit adjustment so that the valve will register with the pipe 23.

An air line 30 is supported centrally of line connecting with the outer air through a passage 31. The air line passes upward through a hole in. the strip 26 which is fixed in position by a screw 32 and is closed at its upper end by a valve 33 which has a conical part at its .upper end adapted to seat in the conical port 34 at the entrance to the passage 29. For-this purpose the valve is fixed to a float 35 in any convenient manner, the float being raised by the oil as the liquid level rises in the chamber 24 so as to open the passage through pipe 30 from the outer air. A passage 38 leads from the chamber 24 to a siphon 36 connected to the rectifier at 37, the siphon leading back to the crankcase; The valve 33 aids the action of the siphon when the chamber becomes filled to a sufiiciently high level, by cutting off the suction through the passage 29 and restoring normal air pressure in the chamber 24. At the same time it prevents any possibility of oil being drawn through passage 29 to the carbureter.

The air that is drawn through the passage 29 by the suction from the carbureter carries with it the gasoline and other vapors distilled from the oil in chamber 24 by the heat imparted thereto from the jacket 40, which jacket is connected to the exhaust at 41.

The operation of my device will, it is thought, he understood from the foregoing description but may be briefly summarized as follows. The oil is forced into the chamber 16 positively by the pump 12, the lower ortion of the chamber forming a settling asin to receive the dirt and metallic particles which settle out of the oil and which may be drawn oil? at appropriate times through the drain passage 18. The oil then passes through screens 19 and 20 which act with great efficacy because the oil is heated to nearly the same temperature in the settling basin as in the chamber 24. From the upper part of the chamber 16 the oil passes through pipe 23 and'port 27 directly to the chamber 24 except when it is heated to an excessive extent when the thermostatic strip 26 will open the valve 25 to permit the oil to pass in full volume A slightly smaller proportion of the oil from the pump now goes through the main passage 14, and a little more through passage 15 owing to the decreased resistance in the pipe 23. As the chamber is filled the float 35 will rise opening the passage 30 and then closing passage 29. The distillation chamber is now substantially filled with oil, which rises above the bend in pipe 36 whereupon the siphon action begins. The suction being cut off at 34 by the valve 33 and the passage 30, 31 being opened the normal air pressure is restored in the chamber 24 and the Oll passes off through the siphon more rapidly than it is forced in through the pipe 23 with the result that the chamber is soon emptied whereupon the chamber 24 again begins to fill and the action is repeated.

As the speed of the engine increases the pressure of the oil pump increases to heighten the flow of oil. At the same time the vacuum in chamber 24 is increased as is also the heat from the exhaust. As all factors increase (or decrease) in unison the action of the rectifier must be uniform and reliable.

By using a siphon to return the oil to the crankcase, and eliminating the valve heretofore used in oil rectifiers I rovide for a constant suction of air throug the oil during-the process of distillation, which makes the distillation more rapid and complete. The slight vacuum thus caused above the oil in thedistillation chamber also helps to make the distillation efiicient and complete.

It will be obvious to those skilled in the art that various changes ma be made in my device without departing rom the spirit of the invention and therefore I do not limit myself to what is shown in the drawings and described in the specification but only as indicated in the appended claims.

Having thus fully described my said invention, what I claim as new and desire to secure by Letters Patent is:

1. An oil rectifier for engines comprising a refining chamber, and a pipe having one end connected to said chamber and having its other end connected to the fuel inlet pas sage at the side of the throttle valve remote from the engine, substantially as set forth.

2. An oil rectifier for engines comprising a distillation chamber, a sediment chamber adjacent the distillation chamber, an inlet for oil into the sediment chamber, an outlet for oil from the distillation chamber, a strainer. for the oil in the sediment chamber, and a pipe having one end connected with the distillation chamber said pipe having its other end connected to the fuel inlet passage at the side of the throttle valve remote from the engine, substantially as set forth.

3. An oil rectifier comprising a distillation chamber, means for supplying oil to the chamber, means for heating the chamber, means connected to the carbureter for withdt'awing from the chamber the gases evolved therein, automatic means for withdrawing the purified oil from the chamber at intervals, comprising a siphon, substantially asset forth.

4. An oil rectifier comprising a distillation chamber, means for supplying heat to said chamber, a siphon for withdrawing oil from the chamber, suction means for withdrawing the gases evolved from the oil, a pipe in the chamber connected to the atmosphere, a valve normally closingsaid pipe and a float in the chamber connected to said valve to operate the same, substantially as set forth.

5. An oil rectifier comprising a distillation chamber, means for supplying heat to said chamber, a siphon for withdrawing oil from the chamber, suction means for withdrawing the gases evolved in the chamber, a pipe in the chamber connected to the atmosphere, a valve normally closing said pipe, and a float in the chamber connected to said valve to operate the same said float also controlling the suction means, substantially as set forth.

6. An oil rectifier comprising a chamber,

a settling basin below said chamber, means for supplying oil to the settling basin, a pipe extending from the settling basin to the chamber, large and small ports between said pipe and said chamber, a valve closing the larger port, and thermostatic means controlling said valve, substantially as set forth.

7. An oil rectifier comprising a distillation chamber,

means for supplying oil. to said chamber, large and small passages connecting the oil supplying means to the chamber, a valve controlling the larger passage, and thermostatic means for operating said valve, substantially as set forth.

In Witness whereof, I have hereunto set 4 my hand and seal at Indianapolis, Indiana this 3rd day of February, A. D. nineteen hundred and twenty-five.

WILLIAM G. WALL. 1,. 8.1 

